This circuit was originally designed to measure capacitance with an ICL7107 but can be used with other digital modules. The circuit is from Electronics Now magazine from November 1996.
With this converter it is possible to tune the signals of the 15 MHz WWV.in AM receiver. WWV is...
This negative voltage source was found in a Popular Electronics from the 90's. The transformer has 120V...
This circuit is from the Audio Handbook of the National Semiconductor of 1977. Its purpose is to...